M 4.9 earthquake: North Pacific Ocean (Japan) — May 22, 1984

M 4.9 earthquake: North Pacific Ocean (Japan) — May 22, 1984. Epicenter 522 km SE of Yokohama, depth 33 km, 08:14 Local (1984-05-21 22:14 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (522 km SE, Japan) — 31.513, 142.701

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